Scientists seeking to cool Earth’s
climate by injecting millions of tons of sulfuric acid droplets high in the
atmosphere might trim rising temperatures but could also destroy much of the
ozone in polar regions, a new study suggests.
Major volcanic eruptions spew large
amounts of tiny particles, or aerosols, high into the atmosphere, where they
scatter light back to space and significantly cool Earth for months to years (SN: 2/18/06, p.
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